Spitzer, Herbert F. (Herbert Frederick), 1906- Spitzer, Herbert F. (Herbert Frederick), 1906-
Activities for the enrichment of arithmetic.
- St. Louis : Webster Divion : McGraw-Hill, Webster Divion : McGraw-Hill, 1964.
Arithmetic -- Study and teaching.--Arithmetic -- Study and teaching.
Arithmetic -- Problems, exercises, etc.--Arithmetic -- Problems, exercises, etc.